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Amino Acids
characteristics of amino acids
20
Biochemistry
Undergraduate 4
01/15/2014

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Term
proline*
Definition

Non-polar amino acid

nonessential amino acid

Due to ring structure (has a second amino group)

found in collagen (helps with the formation)

Interrupts the alpha helix in globular protiens

Term
Alanine*
Definition

Assists with metabolism of glucose

nonpolar amino acid

hydrophobic

nonessential

Term
Glycine*
Definition

Nonpolar amino acid

Makes up collagen

Helps with DNA and RNA construction

nonessential

Term
Aspartic Acid*
Definition

Positively Charged

Donation of proton becomes aspartate

nonessential amino acid

Term
Glutamic Acid*
Definition

Positively charge amino acid

donates a proton to become glutamate

nonessential amino acids

Term
Serine*
Definition

Uncharged Polar Amino Acid

Nonessential amino acid

participates in hydrogen bonds

serves as attachement site for phosphate groups to transport ATP

Term
Asparagine*
Definition

uncharged polar amino acid

nonessential

most often see in children in development and pregnant women.

Term
Glutamine*
Definition

uncharged polar amino acid

nonessential 

assists in protien synthesis

helps feed enterocytes in gut

Term
Tyrosine*
Definition

Nonessential 

uncharged polar amino acid

Neurotransmitter

Precursor for dopamine, norepinephrine, and epinephrine

thyroid hormones

Term
Cytosine*
Definition

Uncharged Polar Amino Acid

nonessential

used in mucomyst

disulfied bonding-->active site for enzymes

Albumin is stabilized by disulfide bonds

Term
Phenylalanine*
Definition

Nonpolar amino acid

essential amino acid

can cause development delay (PKU)

Converts to tyrosine

Term
Valine*
Definition

Nonpolar amino acid

essential

causes sickle cell anemia

branched chain amino acid

help the muscles have energy

Term
Tryptophan*
Definition

Nonpolar amino acid

essential

largest molecule

precursor for serotonin

Term
Threonine*
Definition

uncharged polar amino acid

participates in H-bonding

essential

attachment and transport of phosphate

Term
Isoleucine*
Definition

Nonpolar amino acid

essential

branched chain amino acid

help the body build muscle energy

Term
Methionine*
Definition

Nonpolar amino acid

essential

precursor for SAMe

Helps with depression and arthritis

Term
Histidine*
Definition

Negatively charged 

essential amino acid

Precursor to histamine (neurotransmitter)

Term
Arginine*
Definition

negatively charged amino acid

essential

precursor for creatine (causes muscles to retain water)

Term
Lysine*
Definition

Negatively charged amino acid

essential

precursor for carnitine-->carries ATP to mitochondria

Term
Leucine*
Definition

nonpolar amino acid

essential amino acid

branched chain amino acid

helps the body muscle energy

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